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[NewGVN] Use m_Br to simplify code a bit. (NFC) 

llvm-svn: 374744
This commit is contained in:
Florian Hahn 2019-10-13 23:34:13 +00:00
parent e4300c392d
commit df4fd31128
1 changed files with 5 additions and 5 deletions
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10
llvm/lib/Transforms/Scalar/NewGVN.cpp
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@ -89,6 +89,7 @@
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
@ -122,6 +123,7 @@
using namespace llvm;
using namespace llvm::GVNExpression;
using namespace llvm::VNCoercion;
using namespace llvm::PatternMatch;
#define DEBUG_TYPE "newgvn"
@ -2464,9 +2466,9 @@ Value *NewGVN::findConditionEquivalence(Value *Cond) const {
// Process the outgoing edges of a block for reachability.
void NewGVN::processOutgoingEdges(Instruction *TI, BasicBlock *B) {
// Evaluate reachability of terminator instruction.
BranchInst *BR;
if ((BR = dyn_cast<BranchInst>(TI)) && BR->isConditional()) {
Value *Cond = BR->getCondition();
Value *Cond;
BasicBlock *TrueSucc, *FalseSucc;
if (match(TI, m_Br(m_Value(Cond), TrueSucc, FalseSucc))) {
Value *CondEvaluated = findConditionEquivalence(Cond);
if (!CondEvaluated) {
if (auto *I = dyn_cast<Instruction>(Cond)) {
@ -2479,8 +2481,6 @@ void NewGVN::processOutgoingEdges(Instruction *TI, BasicBlock *B) {
}
}
ConstantInt *CI;
BasicBlock *TrueSucc = BR->getSuccessor(0);
BasicBlock *FalseSucc = BR->getSuccessor(1);
if (CondEvaluated && (CI = dyn_cast<ConstantInt>(CondEvaluated))) {
if (CI->isOne()) {
LLVM_DEBUG(dbgs() << "Condition for Terminator " << *TI